Release 5.4

content/ember-released-5-4.md

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+---
+title: Ember 5.4 Released
+authors:
+  - jared-galanis
+date: 2023-11-03T00:00:00.000Z
+tags:
+  - releases
+  - '2023'
+  - version-5-x
+---
+
+Today the Ember project is releasing version 5.4 of Ember.js and Ember CLI. This release of Ember.js is an LTS (Long Term Support) candidate. LTS candidates prioritize stability over the addition of new features, and have an extended support schedule.
+
+This release kicks off the 5.5 beta cycle for all sub-projects. We encourage our community (especially addon authors) to help test these beta builds and report any bugs before they are published as a final release in six weeks' time. The [ember-try](https://github.com/ember-cli/ember-try) addon is a great way to continuously test your projects against the latest Ember releases.
+
+You can read more about our general release process here:
+
+- [Release Dashboard](http://emberjs.com/releases/)
+- [The Ember Release Cycle](https://blog.emberjs.com/new-ember-release-process/)
+- [The Ember Project](https://blog.emberjs.com/ember-project-at-2-0/)
+- [Ember LTS Releases](https://blog.emberjs.com/announcing-embers-first-lts/)
+
+---
+
+## Ember.js
+
+Ember.js is the core framework for building ambitious web applications.
+
+### Changes in Ember.js 5.4
+
+Ember.js 5.4 is an incremental, backwards compatible release of Ember with bug fixes, performance improvements, and minor deprecations.
+
+#### Features
+
+Ember.js 5.4 introduced 1 feature:
+
+- [#20521](https://github.com/emberjs/ember.js/pull/20521) Add TypeScript support for looking up controllers in the dependency injection registry
+
+#### Bug fixes
+
+Ember.js 5.4 introduced 2 bug fixes.
+
+- [#20529](https://github.com/emberjs/ember.js/pull/20529) - Don't rethrow string errors in handleTransitionReject
+- [#20210](https://github.com/emberjs/ember.js/pull/20210) - Fix hanging tests caused by legacy rsvp code
+
+For more details on changes in Ember.js 5.4, please review the [Ember.js 5.4.0 release page](https://github.com/emberjs/ember.js/releases/tag/v5.3.0).
+
+---
+
+## EmberData
+
+EmberData is the official data persistence library for Ember.js applications.
+
+EmberData did not release a new minor version during this release cycle, as such EmberData remains at 5.3 and 5.3 is a LTS candidate for EmberData.
+
+Please see the [blog post](https://blog.emberjs.com/updates-to-ember-data-versioning-strategy) addressing EmberData's new versioning strategy for more information.
+
+---
+
+## Ember CLI
+
+Ember CLI is the command line interface for managing and packaging Ember.js applications.
+
+### Upgrading Ember CLI
+
+You may upgrade Ember CLI using the `ember-cli-update` project:
+
+```bash
+npx ember-cli-update
+```
+
+This utility will help you to update your app or addon to the latest Ember CLI version. You will probably encounter merge conflicts, in which the default behavior is to let you resolve conflicts on your own. For more information on the `ember-cli-update` project, see [the GitHub README](https://github.com/ember-cli/ember-cli-update).
+
+It is not required to keep Ember CLI versions in sync with Ember and EmberData. After updating ember-cli, you can keep your current version(s) of Ember or EmberData by editing `package.json` to revert the changes to the lines containing `ember-source` and `ember-data`.
+
+### Changes in Ember CLI 5.4
+
+#### Features
+
+Ember CLI 5.4 introduced 4 new features.
+
+- [#10351](https://github.com/ember-cli/ember-cli/pull/10351) Remove ember-lts-4.4 scenario from addon blueprint
+- [#10352](https://github.com/ember-cli/ember-cli/pull/10352) Add official support for Node.js v20
+- [#10353](https://github.com/ember-cli/ember-cli/pull/10353) Remove all telemetry
+- [#10368](https://github.com/ember-cli/ember-cli/pull/10368) Streamline package-manager CLI options
+
+#### Bug Fixes
+
+Ember CLI 5.4 introduced 1 bug fix.
+
+- [#10345](https://github.com/ember-cli/ember-cli/pull/10345) App blueprint may not have explicit-any in ember-data types
+
+#### Deprecations
+
+Ember CLI 5.4 introduced 0 deprecations.
+
+For more details on the changes in Ember CLI 5.4 and detailed upgrade
+instructions, please review the [Ember CLI 5.4.0 release page](https://github.com/ember-cli/ember-cli/releases/tag/v5.3.0).
+
+## Thank You!
+
+As a community-driven open-source project with an ambitious scope, each of these releases serves as a reminder that the Ember project would not have been possible without your continued support. We are extremely grateful to our contributors for their efforts.